Holladay, Sylvia A., author
Prentice-Hall, 1981
Buku Teks
Wallace, Catherine, author
1992
Buku Teks
Wallace, Catherine, author
Oxford University Press, 1993
Buku Teks
Ariff, Mohamed
Asean Economic Research Unit, 1988
Buku Teks
edited by R.C. Bellan, W.H. Pope
McGraw-Hill, 1981
Buku Teks